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Finding the Fourth Proportional to 57,698.12, 86,547.87 and 20,259.27

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Solution

The fourth proportional to 57,698.12, 86,547.87 and 20,259.27 is: 30,389.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,698.12 : 86,547.87 = 20,259.27 : x
  2. Step 2: Convert to fraction form
    57,698.12/86,547.87 = 20,259.27/x
  3. Step 3: Cross multiply
    57,698.12x = 86,547.87 × 20,259.27
  4. Step 4: Simplify right side
    57,698.12x = 1,753,396,666.25
  5. Step 5: Solve for x
    x = 1,753,396,666.25/57,698.12
  6. Step 6: Final answer
    x = 30,389.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.